kconfig: refactor conf_write_defconfig() to reduce indentation level

Reduce the indentation level by continue'ing the loop earlier
if (!sym || sym_is_choice(sym)).

No functional change intended.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>

scripts/kconfig/confdata.c

@@ -774,35 +774,32 @@ int conf_write_defconfig(const char *filename)
 		struct menu *choice;
 
 		sym = menu->sym;
-		if (sym && !sym_is_choice(sym)) {
+
+		if (!sym || sym_is_choice(sym))
+			continue;
+
 		sym_calc_value(sym);
 		if (!(sym->flags & SYMBOL_WRITE))
 			continue;
 		sym->flags &= ~SYMBOL_WRITE;
-			/* If we cannot change the symbol - skip */
+		/* Skip unchangeable symbols */
 		if (!sym_is_changeable(sym))
 			continue;
-			/* If symbol equals to default value - skip */
-			if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
+		/* Skip symbols that are equal to the default */
+		if (!strcmp(sym_get_string_value(sym), sym_get_string_default(sym)))
 			continue;
 
-			/*
-			 * If symbol is a choice value and equals to the
-			 * default for a choice - skip.
-			 */
+		/* Skip choice values that are equal to the default */
 		choice = sym_get_choice_menu(sym);
 		if (choice) {
 			struct symbol *ds;
 
 			ds = sym_choice_default(choice->sym);
-				if (sym == ds) {
-					if (sym_get_tristate_value(sym) == yes)
+			if (sym == ds && sym_get_tristate_value(sym) == yes)
 				continue;
 		}
-			}
 		print_symbol_for_dotconfig(out, sym);
 	}
-	}
 	fclose(out);
 	return 0;
 }